Overview
The 1N5388B/TR8 is a 5-watt Zener diode produced by Microsemi Corporation. It is part of the JEDEC registered 1N5333 through 1N5388 series, offering a wide range of Zener voltages. This specific model has a nominal Zener voltage of 200 volts with a tolerance of ±5%. The diode is encapsulated in a T-18 axial package, making it suitable for through-hole mounting. It is designed to operate at high maximum DC currents with adequate heat sinking due to its low thermal resistance design.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) (Vz) | 200 | V |
| Tolerance | ±5% | - |
| Power - Max | 5 | W |
| Impedance (Max) (Zzt) | 480 | Ohms |
| Current - Reverse Leakage @ Vr | 500 nA @ 144 V | - |
| Voltage - Forward (Vf) (Max) @ If | 1.2 V @ 1 A | - |
| Operating Temperature | -65°C to 150°C | - |
| Mounting Type | Through Hole | - |
| Package / Case | T-18, Axial | - |
Key Features
- JEDEC registered 1N5333 through 1N5388 series.
- Nominal Zener voltage of 200 volts with ±5% tolerance.
- High power dissipation of 5 watts.
- Low thermal resistance design for high maximum DC currents with adequate heat sinking.
- Void-free transfer molded thermosetting epoxy body meeting UL94V-0.
- Tin-lead or RoHS compliant annealed matte-tin plated axial leads, solderable per MIL-STD-750, method 2026.
- Cathode indicated by band; diode to be operated with the banded end positive with respect to the opposite end.
- Available in tape and reel options (add “TR” suffix to part number).
Applications
The 1N5388B/TR8 Zener diode is suitable for various applications requiring voltage regulation and surge protection. These include:
- Voltage regulation in power supplies and DC-DC converters.
- Surge protection in electronic circuits.
- Clamping circuits to protect against voltage spikes.
- Reference voltage sources in analog circuits.
- Overvoltage protection in automotive and industrial electronics.
Q & A
- What is the nominal Zener voltage of the 1N5388B/TR8?
The nominal Zener voltage is 200 volts.
- What is the tolerance of the Zener voltage for the 1N5388B/TR8?
The tolerance is ±5%.
- What is the maximum power dissipation of the 1N5388B/TR8?
The maximum power dissipation is 5 watts.
- What type of package does the 1N5388B/TR8 come in?
The diode is packaged in a T-18 axial through-hole package.
- Is the 1N5388B/TR8 RoHS compliant?
Yes, it is available in RoHS compliant versions.
- What is the operating temperature range of the 1N5388B/TR8?
The operating temperature range is -65°C to 150°C.
- How is the cathode indicated on the 1N5388B/TR8?
The cathode is indicated by a band on the diode.
- What are the typical applications of the 1N5388B/TR8?
Typical applications include voltage regulation, surge protection, clamping circuits, reference voltage sources, and overvoltage protection.
- Can the 1N5388B/TR8 be ordered in tape and reel format?
Yes, it is available in tape and reel options by adding the “TR” suffix to the part number.
- What is the maximum reverse leakage current of the 1N5388B/TR8?
The maximum reverse leakage current is 500 nA at 144 V.
